# Arch Linux install script (archinstall)
# Copyright (C) 2021-2023 Arch Linux
#
# This file is part of archinstall.
# This file is licensed under the GNU General Public License version 3.
# Refer to the `LICENSE` file for further details.

# Modified for openEuler Installation by Liu Wang in 2025

from __future__ import annotations

from eulerinstall.lib.translationhandler import tr
from eulerinstall.tui.curses_menu import SelectMenu
from eulerinstall.tui.menu_item import MenuItem, MenuItemGroup
from eulerinstall.tui.result import ResultType
from eulerinstall.tui.types import Alignment, FrameProperties, FrameStyle, Orientation, PreviewStyle

from ..args import arch_config_handler
from ..hardware import GfxDriver, SysInfo
from ..models.bootloader import Bootloader


def select_kernel(preset: list[str] = []) -> list[str]:
	"""
	Asks the user to select a kernel for system.

	:return: The string as a selected kernel
	:rtype: string
	"""
	kernels = ['linux', 'linux-lts', 'linux-zen', 'linux-hardened']
	default_kernel = 'linux'

	items = [MenuItem(k, value=k) for k in kernels]

	group = MenuItemGroup(items, sort_items=True)
	group.set_default_by_value(default_kernel)
	group.set_focus_by_value(default_kernel)
	group.set_selected_by_value(preset)

	result = SelectMenu[str](
		group,
		allow_skip=True,
		allow_reset=True,
		alignment=Alignment.CENTER,
		frame=FrameProperties.min(tr('Kernel')),
		multi=True,
	).run()

	match result.type_:
		case ResultType.Skip:
			return preset
		case ResultType.Reset:
			return []
		case ResultType.Selection:
			return result.get_values()


def ask_for_bootloader(preset: Bootloader | None) -> Bootloader | None:
	# Systemd is UEFI only
	options = []
	hidden_options = []
	default = None
	header = None

	if arch_config_handler.args.skip_boot:
		default = Bootloader.NO_BOOTLOADER
	else:
		hidden_options += [Bootloader.NO_BOOTLOADER]

	if not SysInfo.has_uefi():
		options += [Bootloader.Grub, Bootloader.Limine]
		if not default:
			default = Bootloader.Grub
		header = tr('UEFI is not detected and some options are disabled')
	else:
		options += [b for b in Bootloader if b not in hidden_options]
		if not default:
			default = Bootloader.Systemd

	items = [MenuItem(o.value, value=o) for o in options]
	group = MenuItemGroup(items)
	group.set_default_by_value(default)
	group.set_focus_by_value(preset)

	result = SelectMenu[Bootloader](
		group,
		header=header,
		alignment=Alignment.CENTER,
		frame=FrameProperties.min(tr('Bootloader')),
		allow_skip=True,
	).run()

	match result.type_:
		case ResultType.Skip:
			return preset
		case ResultType.Selection:
			return result.get_value()
		case ResultType.Reset:
			raise ValueError('Unhandled result type')


def ask_for_uki(preset: bool = True) -> bool:
	prompt = tr('Would you like to use unified kernel images?') + '\n'

	group = MenuItemGroup.yes_no()
	group.set_focus_by_value(preset)

	result = SelectMenu[bool](
		group,
		header=prompt,
		columns=2,
		orientation=Orientation.HORIZONTAL,
		alignment=Alignment.CENTER,
		allow_skip=True,
	).run()

	match result.type_:
		case ResultType.Skip:
			return preset
		case ResultType.Selection:
			return result.item() == MenuItem.yes()
		case ResultType.Reset:
			raise ValueError('Unhandled result type')


def select_driver(options: list[GfxDriver] = [], preset: GfxDriver | None = None) -> GfxDriver | None:
	"""
	Some what convoluted function, whose job is simple.
	Select a graphics driver from a pre-defined set of popular options.

	(The template xorg is for beginner users, not advanced, and should
	there for appeal to the general public first and edge cases later)
	"""
	if not options:
		options = [driver for driver in GfxDriver]

	items = [MenuItem(o.value, value=o, preview_action=lambda x: x.value.packages_text()) for o in options]
	group = MenuItemGroup(items, sort_items=True)
	group.set_default_by_value(GfxDriver.AllOpenSource)

	if preset is not None:
		group.set_focus_by_value(preset)

	header = ''
	if SysInfo.has_amd_graphics():
		header += tr('For the best compatibility with your AMD hardware, you may want to use either the all open-source or AMD / ATI options.') + '\n'
	if SysInfo.has_intel_graphics():
		header += tr('For the best compatibility with your Intel hardware, you may want to use either the all open-source or Intel options.\n')
	if SysInfo.has_nvidia_graphics():
		header += tr('For the best compatibility with your Nvidia hardware, you may want to use the Nvidia proprietary driver.\n')

	result = SelectMenu[GfxDriver](
		group,
		header=header,
		allow_skip=True,
		allow_reset=True,
		preview_size='auto',
		preview_style=PreviewStyle.BOTTOM,
		preview_frame=FrameProperties(tr('Info'), h_frame_style=FrameStyle.MIN),
	).run()

	match result.type_:
		case ResultType.Skip:
			return preset
		case ResultType.Reset:
			return None
		case ResultType.Selection:
			return result.get_value()


def ask_for_swap(preset: bool = True) -> bool:
	if preset:
		default_item = MenuItem.yes()
	else:
		default_item = MenuItem.no()

	prompt = tr('Would you like to use swap on zram?') + '\n'

	group = MenuItemGroup.yes_no()
	group.set_focus_by_value(default_item)

	result = SelectMenu[bool](
		group,
		header=prompt,
		columns=2,
		orientation=Orientation.HORIZONTAL,
		alignment=Alignment.CENTER,
		allow_skip=True,
	).run()

	match result.type_:
		case ResultType.Skip:
			return preset
		case ResultType.Selection:
			return result.item() == MenuItem.yes()
		case ResultType.Reset:
			raise ValueError('Unhandled result type')
